Brief Product Description

WOODWARD 1751-6058 is an industrial-grade 4-channel MPU (Magnetic Pickup Unit) isolation transformer and signal conditioning module designed for Woodward turbine and engine control systems. It serves as a critical interface between magnetic speed sensors and main controllers such as Woodward 505, 505E and MicroNet platforms. The module performs galvanic isolation, signal shaping and voltage limiting for raw AC speed signals, filtering field noise and protecting sensitive control circuitry from surge voltage and ground loop interference. Featuring four independent channels, industrial EMC immunity and 24VDC low-power operation, it ensures precise, stable rotational speed measurement under harsh plant conditions. Fully tested surplus and refurbished WOODWARD 1751-6058 modules are available for legacy turbine control system maintenance, signal channel replacement and industrial retrofit projects.

Core Product Functions

• Four independent MPU signal processing channels supporting simultaneous connection of four magnetic pickup speed sensors
• Galvanic isolation design eliminates ground loop interference and improves signal anti-interference capability
• Precise conditioning, amplification and shaping of weak AC speed signals from field MPU probes
• Built-in voltage limiting and surge protection to prevent high transient voltage damage to controller hardware
• Converts irregular raw sensor waveforms into standard stable frequency signals for speed regulation and protection logic
• Real-time high-precision RPM data transmission for turbine overspeed protection and closed-loop speed control
• Compatible with mainstream Woodward governor and turbine control platforms for seamless system integration
• Industrial-grade vibration and EMI resistance for long-term 24/7 continuous cabinet operation

• Compact modular structure for easy installation, wiring and on-site channel expansion

Application Scenarios

• Woodward 505/505E and MicroNet turbine governor control systems
• Gas turbine, steam turbine and diesel generator set speed monitoring and protection
• Thermal power plant and combined cycle unit rotational signal acquisition systems
• Oil & gas and petrochemical large compressor and rotating machinery speed control loops
• Marine power generation and industrial prime mover condition monitoring platforms
• Legacy Woodward turbine control system MPU signal module replacement and equipment retrofits

FAQ (Frequently Asked Questions)

• Q: Fluctuating speed readings or signal loss after installing 1751-6058?
  A: Check MPU sensor gap and wiring shielding, verify 24VDC power stability, inspect channel terminal tightness, and eliminate on-site electromagnetic interference sources.
• Q: Does WOODWARD 1751-6058 support hot-swap replacement?
  A: Hot swap is not recommended. Disable turbine speed protection interlocks and cut off module power before replacement to avoid false overspeed tripping.
• Q: How many MPU sensors can 1751-6058 connect?
  A: It supports up to 4 independent magnetic pickup speed sensors for multi-channel rotational signal acquisition.
• Q: Which controllers is this module compatible with?
  A: It perfectly matches Woodward 505, 505E and MicroNet series turbine speed control systems.
• Q: Is WOODWARD 1751-6058 available for new projects?
  A: This legacy MPU isolation module is end-of-life for new installations. Only fully tested surplus and refurbished units are supplied for existing system maintenance and retrofits.